CN110346093A - Oil-immersed sleeve pipe leakage of oil detection system and method based on intelligent patrol detection platform - Google Patents
Oil-immersed sleeve pipe leakage of oil detection system and method based on intelligent patrol detection platform Download PDFInfo
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- CN110346093A CN110346093A CN201910514636.0A CN201910514636A CN110346093A CN 110346093 A CN110346093 A CN 110346093A CN 201910514636 A CN201910514636 A CN 201910514636A CN 110346093 A CN110346093 A CN 110346093A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
- G01M3/222—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for tubes
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The oil-immersed sleeve pipe leakage of oil detection system based on intelligent patrol detection platform that the present invention relates to a kind of, including detection device and control centre；Detection device includes ultraviolet irradiation lamp, specific wavelength optical filter, low-light video camera, microprocessor module and wireless transport module；Specific wavelength optical filter is fixedly mounted on before ultraviolet irradiation lamp, allows the light wave of feature wavelength to pass through for filtering out part light wave only；Ultraviolet irradiation lamp, specific wavelength optical filter, low-light video camera, microprocessor module and wireless transport module carry out modularized encapsulation, and carry out matching connection with the functional module interface of intelligent patrol detection platform；Wireless transport module is for the information exchange between detection device and control centre.With two kinds of operating modes of periodic detection and real-time monitoring, information exchange can be carried out with control centre and instruction is transmitted.Detection system building easy to implement, and it is able to satisfy the demand of the following intelligent inspection work, while can work with the inspection of other power equipments and new approaches are provided.
Description
Technical field
It is the present invention relates to electric power system fault intelligent patrol detection technical field, in particular to a kind of based on intelligent patrol detection platform
Oil-immersed sleeve pipe leakage of oil detection system and method.
Background technique
Oil-immersed and high-voltage electrical bushing is the important attached safety device of large-scale power transformer, using oilpaper composite material
As insulation system, wherein insulating oil plays an important role in heat dissipation, insulating square mask, it is ensured that electrical component safe and reliable operation.
The special operation conditions such as aging, unit exception operation or environmental factor in casing During Process of Long-term Operation may cause device for filling oil hair
Raw oil seepage phenomena, and if the hidden danger of leakage of oil does not have found that it is likely that the oil leak that can further cause equipment in time, it is especially right
For current unattended substation, defect hidden danger can then be developed into major defect by tiny flaw forces equipment unplanned
It stops transport, influences the safe and stable operation of power grid.
Insulating oil is a kind of more aromatic hydrocarbon organic matters, and molecular structure is mostly conjugated double bond substance, has absorbable excitation
The molecular structure of light.When ultraviolet or the shorter visible light of wavelength project on this kind of conjugated double bond substance, the substance
Various different colours can be launched, the visible light of varying strength, when ultraviolet source stops projecting, this light just disappears therewith
Lose, i other words, insulating oil is the typical substance with fluorescent effect.It is intrinsic possessed glimmering based on insulating oil molecular structure
Light characteristic, this patent propose a kind of oil-immersed sleeve pipe leakage of oil detection system, using fluorescence spectrum detection technique rapid identification
Whether oil-immersed type power casing has oil seepage situation, to ensure the safe and reliable operation of substation equipment.
With the development of sensing technology and mechanics of communication, the intelligence of traditional substation becomes following development trend, mesh
Preceding existing unattended intelligent substation puts into operation.In unattended operation transformer station, intelligent patrol detection platform (robot) substitution
Traditional manual inspection mode is completed to work to the regular visit of substation equipment.Based on background above, this patent will be proposed
Oil-immersed sleeve pipe leakage of oil detection system carry out modularized encapsulation, and be mounted on intelligent patrol detection platform, utilize intelligent patrol detection
The intelligent patrol detection of platform realization oil-immersed sleeve pipe leakage of oil.It is set in addition, current Condition Monitoring Technology is generally used in application
Real-time Transmission, the processing mode of cloud storage and Framework computing analysis of standby status information, often there is network transmission pressure
Greatly, data redundancy, to host performance require it is too high the problems such as.This patent uses the solution of edge calculations, by fluorescent image
Processing and analysis ability be deployed in detection system terminal, i.e., corresponding algorithm is embedded into the microprocessor of detection module,
Processing analysis in real time is carried out in detection system terminal to the fluorescent image of ultraviolet-cameras capture, and provides preliminary testing result,
It will test result and be uploaded to server host, provide reference for the O&M decision of equipment.
Summary of the invention
For above-mentioned subproblem, the oil-immersed sleeve pipe leakage of oil inspection based on intelligent patrol detection platform that the present invention provides a kind of
Examining system, and seeped accordingly based on the detection method of edge calculations with the oil-immersed sleeve pipe realized under intelligent substation scene
The intelligent measurement and condition diagnosing of oil leak quickly and efficiently find the leakage of oil failure of casing.
Oil-immersed sleeve pipe leakage of oil detection system proposed by the present invention based on intelligent patrol detection platform, is that one kind is integrated with purple
Outer light source, low-light video camera, microprocessor module and wireless transport module, the casing leakage of oil of modularized encapsulation detects dress
It sets, the suitable device of the detection system further includes all kinds of filling types such as current transformer, voltage transformer and power transformer
Substation field puts into operation power equipment.
The device adopts the following technical solutions realization:
A kind of oil-immersed sleeve pipe leakage of oil detection system based on intelligent patrol detection platform, including it is ultraviolet source, ultraviolet filter, micro-
Light video camera, microprocessor and wireless transport module.
Before the ultraviolet filter is fixed on ultraviolet source, to generate the ultraviolet light of fixed band to excite insulating oil to produce
Raw fluorescent effect；
Preferably, 365nm or so is located to the ultraviolet irradiation optical wavelength on bushing installation surface after ultraviolet filter filters, according to phase
It closes Research Literature and shows that, for the oil substances that insulate, the exposure light of the wave band can make its fluorescence efficiency reach peak value；
The low-light video camera is made of camera lens and CCD, it is sensitive to the week fluorescent generated after ultraviolet source irradiates, it can be achieved that
Fair weather daylight environment and night are without the week fluorescent imaging in the dark surrounds of other lighting conditions；
On the one hand the microprocessor module is used to receive the fluorescent image information of low-light video camera capture, utilize embedded algorithm pair
Fluorescent image carries out feature extraction and leakage of oil State Diagnosis, provides corresponding testing result；On the other hand it is come from for executing
Control instruction of server host, including switching low-light video camera operating mode etc.；
The wireless transport module is for sending testing result or real-time image information, and control of the reception from server host
Information processed；
The ultraviolet source, low-light video camera, microprocessor and wireless transport module carry out overall package, and are mounted in intelligence and patrol
It examines on platform, inspection is timed to oil-immersed sleeve pipe leakage of oil situation；
A kind of detection method of the oil-immersed sleeve pipe leakage of oil detection system based on intelligent patrol detection platform, including fluorescence image processing
With the control strategy of leakage of oil Diagnostic Strategy and detection system operating mode.
The fluorescence image processing and leakage of oil Diagnostic Strategy specifically: use gray level image method by fluorescent image first
It is converted into gray level image, horizontal and vertical compression is then carried out to gray level image according to Two-dimensional Maximum spacing principle (2DMMC), and
Kept in the form of numerical matrix, then extract the feature vector of the matrix, by this feature vector with it is glimmering in ne-leakage oil situation
The corresponding set of eigenvectors of light image carries out degree of approximation calculating, and the serious journey of casing leakage of oil is judged according to the degree of approximation of the two
Degree；
The control strategy of the detection system operating mode specifically: detection system has two kinds of works of periodic detection and real-time monitoring
Operation mode.Before intelligent patrol detection platform executes patrol task, which is in standby/dormant state, during inspection,
Detection system starting shoots fluorescent image to detection target, and according to the fluorescence image processing and leakage of oil Diagnostic Strategy into
The diagnosis of row leakage of oil.When the diagnostic result of casing leakage of oil situation is normal (ne-leakage oil), diagnostic result is only uploaded, is uploaded
Next target is detected or switched to after the completion standby/dormant state and complete this inspection work, at this time detection system work
Make in periodic detection mode；When the diagnostic result of casing leakage of oil situation is abnormal (there are leakage of oil failures), detection system
Diagnostic result is first uploaded, while uploading real-time fluorescence image information, so that control centre carries out decision, detection system works at this time
In real-time monitoring mode.
The present invention has following features and benefit:
1) present invention, which is innovatively proposed, realizes oil-immersed sleeve pipe leakage of oil failure using ultraviolet source and low-light video camera
Ultraluminescence detection method provides new resolving ideas for the Leakage Test of oil-immersed type power equipment；
2) molecular structure of the theoretical basis of the design based on insulating oil material, to equipment without special selectivity, therefore, although this
The design of system is directed to oil filled bushing, but can use for reference to oil-immersed equipments such as other mutual inductors, transformer, tap switches
The diagnosis and monitoring of this system realization oil seepage；
3) detection system designed by passes through modularized encapsulation and is mounted on intellectual monitoring platform, sufficiently adaptation future substation
The demand of intelligent development；
4) detection system designed by uses the Diagnostic Strategy of edge calculations, completes casing leakage of oil failure in detection system terminal
Fluorescent image information collection, processing and analysis, the functions such as condition diagnosing, greatly reduce network transmission pressure, improve money
Source utilization efficiency；
Designed detection system has timing detection and two kinds of operating modes of real-time monitoring, and according to the inspection of detection system terminal
Result intelligent switching working mode is surveyed, can be improved the efficiency of casing leakage of oil fault detection, reduces detection device power consumption.
Detailed description of the invention
Attached drawing 1 is detection system composition and detection schematic diagram of the invention；
Attached drawing 2 is detection system workflow schematic diagram；
Attached drawing 3 is the effect picture that casing leakage of oil is detected based on detection system designed by the present invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application embodiment clearer, implement below in conjunction with the application
The technical solution in the application embodiment is clearly and completely described in Fig. 1 ~ 3 in mode, it is clear that described reality
The mode of applying is a part of embodiment of the application, rather than whole embodiments.Based on the embodiment in the application, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the application
The range of protection.Therefore, the detailed description of the presently filed embodiment provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present application of protection is sought, but is merely representative of the selected embodiment of the application.Based on the embodiment in the application,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Apply for the range of protection.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
It describes the application and simplifies description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with spy
Fixed orientation construction and operation, therefore should not be understood as the limitation to the application.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present application, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in this application.
In this application unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
As shown in Figure 1, a kind of oil-immersed sleeve pipe leakage of oil detection system based on intelligent patrol detection platform, including detection device
200 and control centre 300.
Detection device 200 is by ultraviolet irradiation lamp 201, specific wavelength optical filter 202, low-light video camera 203, microprocessor mould
The composition such as block 204 and wireless transport module 205.
Wherein, specific wavelength optical filter 202 is fixedly mounted on before ultraviolet irradiation lamp 201, for filtering out part light wave
Only the light wave of feature wavelength is allowed to pass through.Before optical filter 202 is securable to 201 light source of ultraviolet irradiation lamp by screw thread, to produce
The ultraviolet irradiation light of raw specific wavelength.
For the needs for adapting to the following unattended operation transformer station intelligence inspection, ultraviolet irradiation lamp 201, specific wavelength are filtered
Piece 202, low-light video camera 203, microprocessor module 204 and wireless transport module 205 carry out modularized encapsulation, and patrol with intelligence
The functional module interface 207 of inspection platform 206 carries out matching connection.
Low-light video camera 203 is for receiving fluorescent image information, and microprocessor module 204 is for completing fluorescent image information
Processing, analysis and diagnosis, wireless transport module 205 is for information exchange between detection device and control centre 300.
As shown in Figure 1, tested bushing installation 100 is substation field in fortune equipment, the casing of existing defects will leaked
Insulating oil forms Residual oil region in its outer wall；Detection device 200 is designed using modularized encapsulation, mainly includes ultraviolet source, micro-
Optical detection camera, microprocessor module and wireless transport module are common device in market, to the Residual oil region of defect casing
Ultraviolet irradiation light is provided and captures the reflected fluorescent light of insulating oil, while being handled, being analyzed and diagnosed；Control centre 300 to
Diagnostic result or real-time fluorescence image information are received, information exchange is realized by wireless signal and detection device 200.
Tested bushing installation 100 is made of guide rod 101, internal paper oil insulation 102 and outer wall full skirt 103, if equipment has
There is leakage of oil defect, is then likely to occur Residual oil region 104 at outer wall full skirt.The insulation greasy dirt in Residual oil region 104 is mostly fragrant
Hydrocarbon organic matter, molecular structure are mostly conjugated double bond substance, and fluorescent light will be given out after by ultraviolet light irradiation.
Control centre 300 is used for the diagnostic result that uploads to detection device and identifies, and to the work shape of monitoring device
The O&M strategy of state and test object equipment makes a policy.
As shown in figure 3, there are the sleeve outer walls of oil seepage defect to have grease stain residual, by ultraviolet irradiation light source through filtering
After mating plate, the ultraviolet light for issuing specific wavelength is carried out ultraviolet irradiation to casing by light source, and correlative study shows that molecule has rigidity
Planar structure has big delocalized pi-bond.The pi-electron sigma electrons stable relative to saturated hydrocarbons, it is easier to be excited and project fluorescence, belong to
In fluorescent both substance, benzene just has this design feature, therefore in the ingredient of transformer oil, in addition to saturated hydrocarbons (alkane and
Cycloalkane) it does not fluoresce outside, other components have luminescence phenomenon, and it is especially maximum with polycyclic aromatic hydrocarbon and nonhydrocarbon luminous intensity, and lead to
Aromatic hydrocarbon content is generally 8%~9% in the naphthenic base transformer oil of normal means processing.Various aromatic compounds have it specific glimmering
Light spectrum, it depends primarily on the content of each monomeric compound.Low number of rings aromatic hydrocarbon intensity is bigger, the dominant wavelength of fluorescence spectrum
It is longer.Have determined that 365nm is the ideal irradiation wavelengths of transformer oil at present, the transformer oil through ultraviolet irradiation will issue visible light
The fluorescence spectrum of wave band.Fluorescence has higher identification under the strong light environment on daytime, but when fluorescent intensity is weaker is difficult to effectively
Identification can obviously recognize fluorescence area by the image that low-light video camera is shot, and then it is existing with the presence or absence of oil leak to diagnose casing
As.
When detection, gray level image is converted for fluorescent image using gray level image method first, then according to Two-dimensional Maximum
Spacing principle (2DMMC) carries out horizontal and vertical compression to gray level image, and is kept in the form of numerical matrix, then extract the square
This feature vector set of eigenvectors corresponding with the fluorescent image in ne-leakage oil situation is carried out the degree of approximation by the feature vector of battle array
It calculates, the severity of casing leakage of oil is judged according to the degree of approximation of the two.
Detection system has two kinds of operating modes of periodic detection and real-time monitoring.Patrol task is executed in intelligent patrol detection platform
Before, which is in standby/dormant state, and during inspection, detection system starting shoots fluorogram to detection target
Picture, and leakage of oil diagnosis is carried out according to fluorescence image processing and leakage of oil Diagnostic Strategy.When the diagnosis knot of casing leakage of oil situation
When fruit is normal (ne-leakage oil), only upload diagnostic result, next target is detected or is switched to after the completion of upload it is standby/
Dormant state completes this inspection work, and detection system works in periodic detection mode at this time；When examining for casing leakage of oil situation
When disconnected result is abnormal (there are leakage of oil failures), detection system first uploads diagnostic result, while uploading real-time fluorescence image letter
Breath, so that control centre carries out decision, detection system work at this time is in real-time monitoring mode.
Specifically, as shown in Fig. 2, detection method is carried out according to following steps when detection:
Step 1 starts detection device, and ultraviolet light detects target；
Step 2 low-light video camera receives fluorescent image, and carries out gray processing processing；
Step 3 receives the fluorescent image that low-light video camera is sent, and carries out gray processing processing and compressed data；
Step 4 extracts feature vector, and compared with feature vector library；
Step 5 judges leakage of oil situation, if result be it is normal, enter step 6；If results abnormity enters step 8；
Step 6 uploads status information to control centre；
Step 7 detection is completed, standby/suspend mode, subsequently into step 12；
Step 8 uploads status information to control centre；
Step 9 switches to real-time monitoring operating mode；
Step 10 uploads real-time fluorescence/visible light image information；
Step 11 control centre makes O&M decision and implements；
Step 12 terminates.
The present invention, which is innovatively proposed, realizes oil-immersed sleeve pipe leakage of oil failure using ultraviolet source and low-light video camera
Ultraluminescence detection method, provide new resolving ideas for the Leakage Test of oil-immersed type power equipment.The reason of the design
Therefore molecular structure by basis based on insulating oil material, is filled to equipment without special selectivity although the design of this system is directed to
Tubing and casing, but the oil-immersed equipments such as other mutual inductors, transformer, tap switch can be used for reference with this system and realize oil seepage
Diagnosis and monitoring.Designed detection system passes through modularized encapsulation and is mounted on intellectual monitoring platform, sufficiently adapts to not
Carry out the demand of intelligent substationization development.
Designed detection system uses the Diagnostic Strategy of edge calculations, completes the event of casing leakage of oil in detection system terminal
The functions such as fluorescent image information collection, processing and the analysis of barrier, condition diagnosing, greatly reduce network transmission pressure, improve
The level of resources utilization；
Designed detection system has timing detection and two kinds of operating modes of real-time monitoring, and according to the inspection of detection system terminal
Result intelligent switching working mode is surveyed, can be improved the efficiency of casing leakage of oil fault detection, reduces detection device power consumption.
Claims (3)
1. a kind of oil-immersed sleeve pipe leakage of oil detection system based on intelligent patrol detection platform, including intelligent patrol detection platform, detection dress
It sets and control centre；
The detection device is fixedly mounted on intelligent patrol detection platform；
The detection device includes ultraviolet irradiation lamp, specific wavelength optical filter, low-light video camera, microprocessor module and wireless biography
Defeated module；
Specific wavelength optical filter is fixedly mounted on before ultraviolet irradiation lamp, allows feature wavelength for filtering out part light wave only
Light wave passes through；
Ultraviolet irradiation lamp, specific wavelength optical filter, low-light video camera, microprocessor module and wireless transport module carry out modularization
Encapsulation, and matching connection is carried out with the functional module interface of intelligent patrol detection platform；
Wireless transport module is for the information exchange between detection device and control centre.
2. the oil-immersed sleeve pipe leakage of oil detection system according to claim 1 based on intelligent patrol detection platform, feature exist
In:
The specific wavelength optical filter can be such that the light wave of 365nm attachment passes through.
3. a kind of detection method of the oil-immersed sleeve pipe leakage of oil detection system based on intelligent patrol detection platform, it is characterised in that:
Gray level image is converted for fluorescent image using gray level image method first, then according to Two-dimensional Maximum spacing principle to ash
It spends image and carries out horizontal and vertical compression, and kept in the form of numerical matrix, then extract the feature vector of the matrix, by the spy
It levies vector set of eigenvectors corresponding with the fluorescent image in ne-leakage oil situation and carries out degree of approximation calculating, according to the approximation of the two
Degree judges the severity of casing leakage of oil；
The control strategy of the detection system operating mode specifically: detection system has two kinds of works of periodic detection and real-time monitoring
Operation mode；Before intelligent patrol detection platform executes patrol task, which is in standby/dormant state, during inspection,
Detection system starting shoots fluorescent image to detection target, and according to the fluorescence image processing and leakage of oil Diagnostic Strategy into
The diagnosis of row leakage of oil；When the diagnostic result of casing leakage of oil situation is normal, diagnostic result is only uploaded, after the completion of upload under
One target is detected or is switched to standby/dormant state and completes this inspection work, and detection system works in regular inspection at this time
Survey mode；When the diagnostic result of casing leakage of oil situation is abnormal, detection system first uploads diagnostic result, while uploading real-time
Fluorescent image information, so that control centre carries out decision, detection system work at this time is in real-time monitoring mode.
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| CN112802006A (en) * | 2021-02-07 | 2021-05-14 | 南通大学 | Deep learning-based edge calculation motor oil stain identification method |
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Application publication date: 20191018 |